Lian Li Lancool II Mesh Front Panel Plug
thingiverse
UPDATE 11/28: A commenter on my YouTube review of this case (https://www.youtube.com/watch?v=lrJwxctFG7Q&t=1s) requested a perforated version so air could still be drawn in through the gap. Printing the perforated version is a bit of a stress test as there are a LOT of retractions so keep that in mind before you give it a shot. The Lian Li Lancool II Mesh is an exceptionally cool-running airflow focused case. As pointed out by Gamer's Nexus the front panel mesh is great for catching large debris but Lian Li left a large open slot at the bottom handle that allows air intrusion with no filtering at all and blocking that intrusion doesn't negative impact thermals. Gamer's Nexus examines this in depth and suggests covering with painter's tape: https://youtu.be/_JSLWewcieY?t=536 While that's effective, it is ghetto. This plug will press-fit into the front panel and block air up to the fans and into the case while not restricting usage of the handle to remove the front panel.
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